#283187#283187

#283187 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.3% C 0.142 H 272.5°. Best body text is #FFFFFF at 11.17:1 contrast (WCAG AA passes).

Color values

HEX	#283187
RGB	rgb(40, 49, 135)
HSL	hsl(234, 54%, 34%)
HSV	hsv(234, 70%, 53%)
CMYK	cmyk(70.4%, 63.7%, 0%, 47.1%)
CIE-LAB	lab(24.94, 26.36, -49.26)
CIE-LCH	lch(24.94, 55.87, 298.15°)
OKLab	oklab(36.35% 0.0063 -0.1421)
OKLCH	oklch(36.35% 0.142 272.5)
XYZ	xyz(6.3451, 4.3964, 23.4312)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283187 #877E28

analogous

#286187 #283187 #4F2887

triadic

#283187 #872831 #318728

tetradic

#283187 #872861 #877E28 #28874F

square

#283187 #872861 #877E28 #28874F

split-complementary

#283187 #874F28 #618728

monochromatic

#0C0F29 #1A2058 #283187 #3642B6 #5B66CE

Accessibility & contrast

On white

11.17

#283187 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#283187 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283187

11.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283187	#FFFFFF	#000000	##FFFFFF
##283187	1.00	11.17	1.88	11.17
#FFFFFF	11.17	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408A

Deuteranopia (green-blind)

#003785

Tritanopia (blue-blind)

#004757

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #283187;
/* rgb */ color: rgb(40, 49, 135);
/* oklch */ color: oklch(36.3% 0.142 272.5);

Tailwind

colors: {
  custom: {
    50: '#6f69ab',
    500: '#283187',
    950: '#000000',
  },
}

SCSS

$custom: #283187;
$custom-light: #6f69ab;
$custom-dark: #000000;

JSON

{
  "hex": "#283187",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 135
  },
  "hsl": {
    "h": 234.316,
    "s": 54.286,
    "l": 34.314
  },
  "oklch": {
    "l": 0.36345,
    "c": 0.14226,
    "h": 272.5
  },
  "luminance": 0.04397
}

Semantic roles & 50–950 ramp

primary

#283187

secondary

#B4AB57

accent

#D04ADE

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #283187

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →